Unicode Exception on Products.GSSearch AJAX

2014-03-10 16:46:44 ERROR Zope.SiteErrorLog 1394488004.380.945089493159 http://groupserver/s/search.ajax
Traceback (innermost last):
  Module ZPublisher.Publish, line 138, in publish
  Module ZPublisher.mapply, line 77, in mapply
  Module ZPublisher.Publish, line 48, in call_object
  Module Products.Five.browser.metaconfigure, line 479, in __call__
  Module Products.Five.browser.pagetemplatefile, line 125, in __call__
  Module Products.Five.browser.pagetemplatefile, line 59, in __call__
  Module zope.pagetemplate.pagetemplate, line 113, in pt_render
  Module zope.tal.talinterpreter, line 271, in __call__
  Module zope.tal.talinterpreter, line 343, in interpret
  Module zope.tal.talinterpreter, line 533, in do_optTag_tal
  Module zope.tal.talinterpreter, line 518, in do_optTag
  Module zope.tal.talinterpreter, line 513, in no_tag
  Module zope.tal.talinterpreter, line 343, in interpret
  Module zope.tal.talinterpreter, line 852, in do_condition
  Module zope.tal.talinterpreter, line 343, in interpret
  Module zope.tal.talinterpreter, line 533, in do_optTag_tal
  Module zope.tal.talinterpreter, line 518, in do_optTag
  Module zope.tal.talinterpreter, line 513, in no_tag
  Module zope.tal.talinterpreter, line 343, in interpret
  Module zope.tal.talinterpreter, line 852, in do_condition
  Module zope.tal.talinterpreter, line 343, in interpret
  Module zope.tal.talinterpreter, line 531, in do_optTag_tal
  Module zope.tal.talinterpreter, line 513, in no_tag
  Module zope.tal.talinterpreter, line 343, in interpret
  Module zope.tal.talinterpreter, line 742, in do_insertStructure_tal
  Module Products.PageTemplates.Expressions, line 218, in evaluateStructure
  Module zope.tales.tales, line 696, in evaluate
   - URL: /home/gs/Development/OGN/GroupServer/stage2/src/Products.GSSearch/Products/GSSearch/browser/templates/search_ajax.pt
   - Line 19, Column 4
   - Expression: <StringExpr u'groupserver.TopicResults'>
   - Names:
      {'args': (),
       'container': <Folder at /groupserver/Content/initial_site/s>,
       'context': <Folder at /groupserver/Content/initial_site/s>,
       'default': <object object at 0x7f165d84b250>,
       'here': <Folder at /groupserver/Content/initial_site/s>,
       'loop': {},
       'nothing': None,
       'options': {},
       'repeat': <Products.PageTemplates.Expressions.SafeMapping object at 0x7f1648180158>,
       'request': <HTTPRequest, URL=http://groupserver/s/search.ajax>,
       'root': <Application at >,
       'template': <Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at 0x6462b90>,
       'traverse_subpath': [],
       'user': <CustomUser '5aGFeJZR8R1drE0EiEWuIw'>,
       'view': <Products.Five.metaclass.SimpleViewClass from /home/gs/Development/OGN/GroupServer/stage2/src/Products.GSSearch/Products/GSSearch/browser/templates/search_ajax.pt object at 0x7634810>,
       'views': <Products.Five.browser.pagetemplatefile.ViewMapper object at 0x763cad0>}
  Module zope.contentprovider.tales, line 77, in __call__
  Module Products.GSSearch.topicResultsContentProvider, line 60, in update
  Module Products.GSSearch.querymessage, line 108, in topic_search_keyword
TypeError: decoding Unicode is not supported